VIR Vulnerability Intelligence Relay

CVE-2015-8624

high
Published 2017-03-23 · Modified 2026-05-13
CVSS v3
8.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v2
6.8
VIR risk
8.8

Description

The User::matchEditToken function in includes/User.php in MediaWiki before 1.23.12, 1.24.x before 1.24.5, 1.25.x before 1.25.4, and 1.26.x before 1.26.1 does not perform token comparison in constant time before determining if a debugging message should be logged, which allows remote attackers to guess the edit token and bypass CSRF protection via a timing attack, a different vulnerability than CVE-2015-8623.

Predictions

Exploit likelihood
92%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2015-8624

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — https://phabricator.wikimedia.org/T119309

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-December/000186.html

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — http://www.openwall.com/lists/oss-security/2015/12/23/7

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — http://www.openwall.com/lists/oss-security/2015/12/21/8

OS impact
OSVersionStatusFixed in
debian debianbookwormfixed1:1.25.5-1
debian debianbullseyefixed1:1.25.5-1
debian debianforkyfixed1:1.25.5-1
debian debiansidfixed1:1.25.5-1
debian debiantrixiefixed1:1.25.5-1

Application impact
VendorProductVersionsFixed
mediawikimediawiki{"endIncluding":"1.23.11"}
mediawikimediawiki1.24.0
mediawikimediawiki1.24.1
mediawikimediawiki1.24.2
mediawikimediawiki1.24.3
mediawikimediawiki1.24.4
mediawikimediawiki1.25.0
mediawikimediawiki1.25.1
mediawikimediawiki1.25.2
mediawikimediawiki1.25.3
mediawikimediawiki1.26.0

References

CWEs

CWE-352

Verify integrity in audit chain (admin only). AS-IS.